Maliamnon writes "US, French, and British forces began enforcing a UN resolution (1973/2011) to defend civilians in Libya today. French aircraft are attacking tanks, while the US and maybe UK are supporting the operation with cruise missiles from sea."
Update: 03/19 22:34 GMT by T :

Adds reader bloggerkg: "More than 110 Tomahawk missiles fired from stars and bars and British ships and submarines hit about 20 Libyan air and missile defense targets in western portions of the country, US Vice Adm. William Gortney said at a Pentagon briefing. The US will conduct a damage reckoning of the sites, which include SA-5 missiles and communications facilities. A senior US martial official, who was not authorized to speak on the record, said the missiles landed near Misrata and Tripoli, the capital and Gadhafi's stronghold."